RelationshipLayoutEditPolicy.java

/* This file is part of Green.
 *
 * Copyright (C) 2005 The Research Foundation of State University of New York
 * All Rights Under Copyright Reserved, The Research Foundation of S.U.N.Y.
 * 
 * Green is free software, licensed under the terms of the Eclipse
 * Public License, version 1.0.  The license is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */

package edu.buffalo.cse.green.editor.controller.policies;

import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.LayoutEditPolicy;
import org.eclipse.gef.editpolicies.NonResizableEditPolicy;
import org.eclipse.gef.requests.CreateRequest;

/**
 * Provides support for maneuvering the bendpoints of a relationship when the
 * source or target moves.
 * 
 * @author bcmartin
 */
public class RelationshipLayoutEditPolicy extends LayoutEditPolicy {
	public RelationshipLayoutEditPolicy() {
		super();
	}

	/**
	 * @see org.eclipse.gef.editpolicies.LayoutEditPolicy#createChildEditPolicy(org.eclipse.gef.EditPart)
	 */
	protected EditPolicy createChildEditPolicy(EditPart child) {
		NonResizableEditPolicy dragPolicy = new NonResizableEditPolicy();
		dragPolicy.setDragAllowed(true);
		return dragPolicy;
	}

	/**
	 * @see org.eclipse.gef.editpolicies.LayoutEditPolicy#getCreateCommand(org.eclipse.gef.requests.CreateRequest)
	 */
	protected Command getCreateCommand(CreateRequest request) {
		return null;
	}

	/**
	 * @see org.eclipse.gef.editpolicies.LayoutEditPolicy#getDeleteDependantCommand(org.eclipse.gef.Request)
	 */
	protected Command getDeleteDependantCommand(Request request) {
		return null;
	}

	/**
	 * @see org.eclipse.gef.editpolicies.LayoutEditPolicy#getMoveChildrenCommand(org.eclipse.gef.Request)
	 */
	protected Command getMoveChildrenCommand(Request request) {
		return null;
	}
}